escaped seedlings are susceptible to EFB. Squirrels and
bluejays move viable nuts various distances from
orchards. These nuts germinate and produce trees that can
be infected by the EFB fungus. Many are susceptible since
they are likely to have susceptible parents such as
Escaped seedlings can be seen
along roads and fences near orchards. They are often
neglected and unmanaged. Removal of these seedlings can
greatly reduce the amount of susceptible tissue that
might harbor EFB.
Native hazelnuts (Corylus
cornuta var. californica) do not get EFB and
do not need to be removed.
These wild seedlings along the
road were infected with EFB and were directly across the
road from a commercial orchard. These escaped seedlings
are highly susceptible and should be removed.
Photo by Jay Pscheidt,